<i>City of Darkness and Light</i> by Rhys Bowen

When her marital home in the Village is bombed—perhaps in retaliation against her husband, the NYPD stalwart—also their lives now possibly at risk—Daniel urges Molly to accept their neighbors/friends’ Gus and Sid’s invitation to join their Paris break in their Montmartre piedà-terre (French for what is usually a modest city apartment).

Molly and baby experience rough seas on the ocean liner but eventually train to Paris. When they reach the pied-à-terre, it’s empty. The landlady is not helpful, there’s no word for Molly. As Impressionism gives way to Fauvism and Cubism, and the Dreyfus affair rocks France, Molly juggles child-care with hunting her friends in an unfamiliar city.